Anonymity Check
See whether your browser gives you away behind a proxy or VPN: your real IP leaking through WebRTC, an IPv6 address from another country, a time zone and language that do not match the IP.
WebRTC leak
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IPv6
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Time zone
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Browser language
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The checks run in your browser. Only your IP goes to our server to look up the country and time zone.
How the check works
We check WebRTC
Your browser asks a public Google STUN server for its external address. This request goes over UDP, bypassing an HTTP proxy. If the address differs from the IP websites see, WebRTC reveals your real IP.
We compare IPv6 and IPv4
If you have IPv6, we check whether it is from the same country as your IPv4. A proxy or VPN that carries only IPv4 leaves your provider's IPv6 open to websites.
We match the time zone and language
We compare the browser time zone with the IP time zone and show the browser languages. The IP country and time zone come from ipwho.is, as in the IP check. Everything else is checked in your browser.
How to read the result
WebRTC leak
A website sees the proxy address but can learn your real IP through WebRTC. This is the main sign anti-fraud systems use to spot proxies. Close it with a browser setting, an extension or an antidetect browser profile.
IPv6 from another country
IPv6 bypasses the proxy or VPN. Turn IPv6 off in the system or choose a proxy that supports it.
Time zone mismatch
The browser runs on one time, and the IP is from a country with another. Websites with anti-fraud protection notice that. Change the time zone in the system or in the antidetect browser profile.
Browser language
The language is shown for reference. Websites compare it with the IP country, but regular users often have a different language, so there is no verdict.
Questions and answers
Why are proxy headers not checked?
How do I close a WebRTC leak?
What if the time zone does not match the IP?
Do you check for DNS leaks?
Do you store the results?
Other free tools
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